dot_product(n,n-1,...2,1)*(6,7,...,n,1,2,3,4,5).

Terms

a(0) =71a(1) =119a(2) =180a(3) =255a(4) =345a(5) =451a(6) =574a(7) =715a(8) =875a(9) =1055a(10) =1256a(11) =1479a(12) =1725a(13) =1995a(14) =2290a(15) =2611a(16) =2959a(17) =3335a(18) =3740a(19) =4175a(20) =4641a(21) =5139a(22) =5670a(23) =6235a(24) =6835a(25) =7471a(26) =8144a(27) =8855a(28) =9605a(29) =10395